i don’t understand this. can someone please explain how to find the inverse of this?
2 Answers

This isn’t easy. First, there are multiple values of x for the same value of y, so there isn’t a proper inverse function on the whole domain. Here’s how you do it:
y = x^2 – 10x + 25 – 25
y = (x5)^2 – 25
y+25 = (x5)^2
x5 = +/sqrt(y+25)
And you get TWO inverses:
x = 5 + sqrt(y+25), for x>=5
x = 5 – sqrt(y+25), for x<=5
Hope this helped!

I’m no expert but I’m pretty sure it’s just over 1.
so
y = x2 – 10x
y[inverse] = (1) / (x2 – 10x)